62-year-old Ding Zhu Ji takes care of his 85-year-old mother at Chi Mei Medical Centre in Taiwan.
A photograph of a man carrying his mother to seek treatment at a hospital has touched the hearts of many people.
It was taken by an undergraduate, who saw the mother-and-son pair at Chi Mei Medical Centre in Taiwan.
The picture has gone viral after it was posted online.
Over the past three days, the hottest topic discussed online was "Who is he?" with thousands of netizens joining in the search for the identity of the son.
It was finally revealed that he